Abstract
The analysis of the amplitude variations of the semidiurnal tide for series of wind data collected in the lower thermosphere throughout more than ten years (1979–1990) at the CNR radar station near Bologna (I), reveals the presence of periodicities with time scales quite similar to those of planetary waves, as deduced from the correspondent wind velocity spectra mainly in the 2–10 day band at 90–100 km. Possible non-linear coupling processes between tidal and planetary waves would account for the presence of subsidiary peaks close to the semidiurnal period mainly in the 10–16h band.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
